Well, to control the bank indicator I tried this:double dampening = 0.91;FLOAT64 FSAPI Attitude_Bank_cb(PELEMENT_SPRITE pelement){ FLOAT64 bank_degs; lookup_var(&bank); // MODULE_VAR defined above if(isPowerOn & isGyroPowerOn) { // Battery ON AND Gyro switch ON -track toward var_value bank_degs = bank.var_old.n * dampening + bank.var_value.n * ( 1.0 - dampening ); bank.var_old.n = bank.var_value.n; } else { // Gyro not powered -track toward 28 degrees bank bank_degs = bank.var_old.n * dampening + 28 * ( 1.0 - dampening ); bank.var_old.n = bank.var_value.n; } return bank_degs;}but while the bank indicator moves as desired with both Gyro and Battery off, the second I turn on the Battery, it starts tracking to 0 bank (level) even though the Gyro switch is OFF.Any ideas on why? This seems to be impossible given the code above. Also, I hard coded two returns in the if statement, and they worked as expected. So, must be my formula.Patrick

"&&" instead of "&" maybe?

Thanks Arne, but even after correcting this mistake it doesn't work.Hmmmm I'll look at it later today, must be something I am missing.Patrick

After being more awake, correcting the error Arne spotted for me (thanks Arne), and further testing, I have concluded that actually the code was working, only so fast, it syncs up right away, and made me think it was not working.So, I just need to play more with it.Patrick